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What Size Cake for 75 Guests?

Cutting party slices, a single 16" round seats about 77 — enough for 75. Every option is below.

75 guests need

16" round

about 77 party servings (1½ × 2 in slice) · see all options below

Data & method: Serving counts from the published Wilton cake serving chart (4-inch-tall cakes; party 1½ × 2 in slice, wedding 1 × 2 in slice). Every figure is checked by an automated test. How we calculate →

Check any size or head count

Preset to 75 guests — the reverse lookup below the tiers finds the smallest fit.

Serving style
+ Add tiers for a tiered or wedding cake

Serves about

20

party slices (1½ × 2 in)

Your cake, tier by tier

Next: how much frosting for this cake? →

Or plan backwards — how many guests?

We'll find the smallest cake that seats them, using the party/wedding slice size selected above.

A 16" round seats about 77 party servings — enough for 75.

Every way to seat 75

The chart below shows the smallest cake that covers 75 guests for each shape and slice size — all from the same Wilton figures the calculator uses. "Party" slices are 1½ × 2 in slice; "wedding" slices are the slimmer 1 × 2 in slice, which is why the wedding options run smaller.

Option Smallest fit Seats about
Round, party slices 16" round 77
Square, party slices 16" square 80
Round, wedding slices 14" round 78
Sheet, party slices no single sheet is big enough —

A single cake covers this comfortably. If you'd rather make a moment of it, any two-tier combination whose counts add past 75 works — the calculator below totals tiers live as you pick them. Treat 75 as a minimum: end pieces and uneven cuts always cost a few servings, and leftover cake has never been a problem.

Cake ordered or planned? The frosting calculator and recipe scaler handle the baking side if you're making it yourself.

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Frequently Asked Questions

What size cake do I need for 75 guests?

Cutting party slices (1½ × 2 in slice), a single 16" round seats about 77 — enough for 75. No single sheet in the standard chart covers 75 party slices — tier, or serve two sheets.

What size cake for 75 wedding guests?

Wedding slices are slimmer (1 × 2 in slice), so cakes stretch further: a single 14" round seats about 78. Wedding planners usually add a few servings of margin on top for cutting loss.

Should I round up for 75 guests?

Yes — treat 75 as the minimum. End pieces, uneven cutting and second helpings all reduce the real yield, so a size (or tier) above the exact fit is the safe choice. Leftover cake keeps; running short doesn't fix itself.